This is all new to me......building something to keep moisture IN.....

I've thought about lining it all will thin acrylic sheets, or painting it with Drylock, or something similar. I would just be worried about toxins leaching out.

I built something similar way back in the day when I had iguanas, but dart frogs are on a whole new level.

I'm thinking it may be more work than its worth. LOL